Centrifugal pumping apparatus.



A. P. BROCKLEBANK.

CENTRIFUGAL PUIVIPING APPARATUS.

APPLICATION FILED JULY 23| 1915.

Patented June 26, 1917.

BCH @MMWCGUCOO Ilm/enter .fi rtlyur P. BrockLelcmmK9 bmg:

unieron.

BROCKLEBANK, F BROOKLYN, NE'W YORK, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

CENTRIF'UGAL lUJl/IPING APPARATUS.

Specification of Letters atent.

'Patented u une 26, 119i?.

.eppiie'auon ined July as, 1915. serial no. 41,519.

To aZZ whom t may concern:

Be it known that I, ARTHUR P. BROCKLE- BANK, a citizen of the United States, residing at Brooklyn, in the county of Kings, State vapor pump, and particularly to such appa-- ratus for removing the watervof condensation and the air, vapor, and uncondensed gases from condensers. In the following specication I have described my invention as applied to such use, but it will be understood that it is not necessarily limited thereto.

The object of the invention is to provide an improved `structural arrangement for an apparatus of this type.

For a consideration of what I believe to be novel and my invention7 attention is directed to the accompanying description and the claims appended thereto.

In the accompanying drawing Figure 1 is a sectional view of an apparatus embodying my invention, and Fig. 2 is a fragmentary detail view of the guide member surrounding the impeller of the water throwingv pump. y

Referring to the drawing, Shindicates a bed plate upon which the pumping apparatus is mounted and which will also preferably support the driving means for it. No driving means is shown in the drawing, but it will be understood that it may comprise a suitable turbine, motor, or other device.- 4 indicates the driving shaft and 5 a coupling connecting it to the driven shaft 6, The driven shaft is supported in a bearing 7 carried by the standard' 8 rising from the bed plate 3 and projects through a stuffing box 9 into the casing of the pumping apparatus. The pumping apparatus comprises essentially two pumps, a condensate pump and an air and vapor pump of the water throwing type. 10 indicates theimpeller of the water pump and 11 the impeller of the air pump. They are mounted adjacent each other on the overhung end of the shaft 6, and their inlet sides face in'opposite directions and away from each other. The casing for the water pump comprises the annular portion l2 in which stuffing box '9 is arranged and to which leads the inlet conduit 13, and the discharge scroll 14 which surrounds the impeller 10 and is provided with the discharge opening 15. 16 indicates stationary directing vanes fixed in the portion 12' of the casing and acting to direct the water to the vanes l?" of the impeller 10.

The stationary vanes 16 extend well within the admission end of the impeller so as to direct the water thereto as evenly as possible and prevent any whirling action of the water. The operation of such a pump is wellknown and needs no description. The water venters through inlet 13 and is discharged Vby impeller 10 through the discharge opening l5.

18 indicates the air and vapor inlet to the air pump, here specifically illustrated as an ,air pump of the water throwing type, and 19 the' throwing water inlet. /Surrounding the impeller 11 is the annular discharge ring or member 20, there being an annular space or passage as indicated at 21 between them. The air inlet 18 communicates with the annular spaces 18@ upon each side-of the discharge ring 20. The discharge ring 20 is provided with suitable directing vanes 22 forming between them the discharge passages 23 .as shown in Fig. 2. It has been found in practice that the tips of the vanes 22 are one of the rst places to show wear, and to provide for readily replacing these tips without necessitating the replacing of the whole directing ring, I form it in two parts 24 and 25. The part 24 comprises one of the side walls of the discharge ring and the outer portion of the other and carries the outer'portion of the vanes, and the part 25 comprises the inner portion of the last mentioned side wall and carries the tips of the vanes. The respective parts are suitably bolted or fastened together. By this means the tips can very readily be replaced when found necessary. The discharge passages 100 23 communicate at their outer ends with the discharge scroll 26. The discharge openingfor the air pump is indicated in dotted lines at 27. The impeller is provided with suitable vanes 28 and the throwing water is 105 guided and directed to the impeller by curved annular passages formed between directing vanes 29 carried between the flanged ring 30 and `the cap 31-which fits over `the end of the shaft. By this means the throwing water 110 is directed evenly and smoothly and without any whirling actionto the eye of the impeller. The two pump; casings have an-intermediate wal-l 32 in common and this is prefy erably, although not necessarily, formed integral with the condensate pump casing; In

other words, in the arrangement as slown,

a wall of the condensate pump forms also one wall of the water throwing pump. The two casings are fastened together by bolts 33, and are' divided `horizontally as indicated at 34.

In the operation of the air pump, the

ythrowing lwater enters the impeller 11 the impeller across the gap or annular space through the inlet 19 and is discharged by 21 entraining air and other gases in its passage in a well understood manner. The throwin water and entrained air and gases are disc arged by way of opening 27.

While I have described my invention 'in connection with an air pump of the water I"throwing type, and this is the type I contemplate, it is to be understoodthat the invention is not necessarily` limited thereto.

By the above arrangement the condensate pump and the air pump have separate inlets and this has the advantage that it permits piping'the air and condensate separately from the condenser so that the air can be taken out of the condenser at any place'desired. Heretofore inA combined pumps of this character, with which I am familiar, the

two pumps have been provided with an ad! mission inlet in common, and hence have been open tothe objection that it has been 'necessary to always take the condensate and air from the condenser at the same point, an arrangement that is often not desirable. Furthermore the air had to-be taken out of the bottom of the condenser which was often objectionable.

My improved apparatus also has the adL vantage that since the admission sides ofthe impellers face in opposite directions and away from each other they may be placed much closer together thus making the appa-I use of morel than one size of condensate pump with any given size of air pump since it is only necessary to bolt on to the air pump the size of condensation' pump desired. In accordance with the provisions of the ciple of operation of my inventiontogether with the apparatus which I now consider to represent the bestl embodiment thereof; ybut I desire to have it understood that theapparatus shown is only illustrative, and that the invention can be carried out by other` means.

Whatl I claim as new and desire to secure by Letters Patent of the United States, is

l. A centrifugal pumping apparatus comprising a fluid pump anda water throwing air pump having their impellers mounted onthe same shaft, casings therefor having a dividing wall in common, said pumps lbeing arranged with their admissionopenings fac-v ing in opposite Adirections and. away from each other-,tand separate inlet, conduits for each of said pumps., Y

2. In a centrifugal pumping apparatus, the combination of a bed plate, a centrifugal air pump mounted on the bed `plate and having its casing formed with an open-side, a centrifugal liquid pump detachably con'- nected to the casing of the first pump-and arranged over said opening so that one of its sides closes the same, a s haft,impellers for said pumps mounted on the shaft with their admission. sides facing in opposite directions and away from each other, and separate inlet conduitsfor each of said pumps. 3. In a. centrifugal pumping apparatus, the combination of a, bed plate, a water throwing air pump mounted thereon and having its casing formed with an open side, a liquid pump detachably connected to 'the casing of the air pump and-arranged over said opening so that otreiof its sides closes the same, the casings of each of said pumps being divided horizontallywhereby the upper half of one may be removed without disturbing the other, a shaft, and impellersfor said pumps mounted on the shaft with their admission sides facing in opposite directions and away from each other.

4. In a centrifugal pumping apparatus, the combination of a water throwing air pump comprising a casing having admission and discharge openings on one side, a

liquid pump comprising a casing fastened to the first named casing on the side opposite` to its admission and discharge openings, said two casings having an intermediate wall in common, the casing of said liquid pump having admission and discharge openings 1n the side opposite to said common intermediate wall, a bearing, a' shaft supported in it and having an overhung end projecting into the casings, and impellers for the pumps mounted on the overhang end of said shaft with their inlet sides facing in opposite directionsand away from each other.

5. In a\pumping apparatus, the combination of a base, a centrifugal pump supported thereon comprising a casing formed with an openy side and having inlet and discharge passages on the side opposite to said open.

'thereto,.whereby'said second named pump may be removed bodily from the first named pump Without 'disturbing the first :named pump. I 4

6. In a pu ping'apparatus, the combination of a bed plate,a Water throwing air pump mounted thereon and having its casing formed with an open side, a liquid pump detachably connected to the casing of the Vair pump and arranged over said opening so that one of its sides closes the same, a bearing, a shaft supported in said bearing and having an overhung end which projects into the' casings of both pumps, and impellers for said pumps mounted on the overhung end of said shaft With their admission sides. facing in opposite directions and away from each other.

InA Witness whereof, have hereunto lset my hand this 2nd day of July 1915.

ARTHUR l?. BROCKLEBANK. 

